Scraping implement



March 4, 1941. D. J. WALLACE 2,233,657

SCRAPING IMPLEMENT Filed May 29, 1959 ATTORNEY.

Patented Mar. 4, 1941 U L UNITED STATES PATENT OFFICE 2,233,657 SCRAPINGIMPLEMENT David J. Wallace, Los Angeles, Calif., assignor, by mesneassignments, to J. R. Trottier, Los

Angeles County, Calif.

Application May 29, 1939', Serial No. 276,398

11 Claims. (Cl. 30-169) This invention relates to a scraping implementwith an aperture l6 which is elongated in the diadapted for performing agreat variety of scraprection of the width of the blade. Through this inperations. aperture or slot of each blade l extends a tie Among theobjects of the invention are to prorod 20, which is common to allblades. Said 5 vide a scraper furnished with blades having doutie rod 20passes in a friction tight manner 5 ble scraping edges, the two parts ofeach double through alined holes 2| through the central poredge beingalternately applied to the surface betions of the triangular projections[2 of the body ing scraped; to provide an improved means for l0 whichare between the grooves ll, there also rockihgly supporting scraperblades in such a being a body projection 22 at each end of the demmanner as to apply their scraping edges more Vice through which said rodlikewise passes in a 10 efficiently to a surface being scraped; tosupport friction tight manner; or if desired, other suitthe scraperblades in a somewhat yielding manable securing means may be provided tokeep the ner thereby tempering their scraping action so rod in place.

that they will not out too deeply into an object Said tie rod 20 is madeof spring steel and is being scraped, yet will be eflicient in operationtherefore will permit the body [0 to be considerand'of a sturdy,dependable construction; to proably flexed when the device is in use,thus making vide an improved elastic member as a carrier'for it possibleto apply the scraper blades more encethe scraping elements, and tosimplify and imtively to uneven surfaces.

prove upon various structural details of devices I The slot 16 of eachblade I5 is located at its 20 of the kind to which the inventionpertains. mid-width, hence the blade is rendered reversible 20 Otherobjects, advantages and inventive feaso that either of its long edgesmay be utilized tures of construction will hereinafter appear. forscraping operations. Each long edge of the Referring to the accompanyingdrawing, which blade is furnished with a double cutting edge illustrateswhat is at present deemed to be a prehaving the cutting .angles 25,scallops 26 near the ferred embodiment of the invention, long sides ofthe blade serving to increase the 25 Fig. 1 is a plan View of thedevice, looking at cutting efficiency of the edges 25 by giving them theback thereof. sharper angles.

Fig. 2 is a side elevation thereof. In using the device the operatorwill apply the Fig. 3 is a cross section on line 33 of Fig. 2.projecting portions of the blades I5 to the sur- 30 Fig. 4 is areproduction on an enlarged scale face to be scraped and will thenreciprocate the 30 of a portion of Fig. 2 showing more clearly anindevice in the direction of its length. This will dividual scraperblade, its attaching means and cause first one then the other of thecutting its relation to adjacent parts of the device. Difangles orshoulders 25 of the outer double edge of ferent Operative positions ofsaid blade are indieach blade toscrape the surface of the surface 5cated by dotted lines. being operated upon. This alternate use of saidReferring in detail to the w the elOncutting shoulders results from therocking movegated, generally rectangular body I0 is of an ment impartedto each blade, as indicated by elastic character, being desira y m of rr dotted lines in Fig. 4, and not only causes them or a rubber-likematerial. It is furnished with a t act more effectively but doubles theperiod of plurality of transversely ext Substantially time they can beused without sharpening. These 40 parallel grooves H which extend intoone of its blades are also reversible, hence first one double faces, andwhich are desirably equally spaced edge and then the other can bepositioned for apart, as shown. Each of said grooves H is of aapplication to surfaces to be scraped, the tie rod triangular shape asto its cross-section, thus wi- 20 being removable to permit of thereversing dening its mouth portion and narrowing its botof the blades.After being reversed, the blades 45 tom. Hence adjacent grooves II areseparated will operate in the same manner as before, beby elongated,triangular (in cross section) procause the slot 16 of each blade issymmetrically jections [2 of the body I0. The body 10 has webspositioned in respect to the length and width of l3 along its sideswhich close the ends of the the blade. grooves II. The flexibility ofthe body 10 and resiliency 50 Within each groove H is rockably mounted aof the tie rod 20 combine to permit a limited scraper blade l5 whichextends to the bottom flexion of the device as a whole, enabling the opof the groove and a portion of which projects erator to conform thescraping edges of the from the groove, as shown. The portion of theblades more closely to wavy, convex or concave blade contained withinthe groove is furnished surfaces being scraped. 55

Owing to the elastic character of the grooved portion of the body Illand to the taper in cross section of the portions thereof locatedbetween the grooves, a yielding action is aiforded to each scraper bladewhich permits it to ride over high spots of surfaces being scraped andalso to conform better to uneven surfaces. Also the swinging .action ofthe blades is made more positive and satisfactory by reason of the factthat the inner portions of the grooves II are sufficiently narrowed tomaintain substantially stationary the inner edges of the blades whichabut against them, thus causing the outer edge of each blade to swing inan arc the radius of which is determined by the position of its inneredge.

I claim:

1. In a device of the kind described, an elongated body having aplurality of transverse grooves which open out along a side portionthereof, scraper blades which individually occupy individual grooves ofsaid plurality of grooves, said grooves allowing a rocking movement ofsaid blades, and means to fasten said blades swingably within saidgrooves, said grooves having narrowed inner portions containing snuglythe inner edge portions of said blades.

2. The subject matterof claim 1 and, the portions of said body betweensaid grooves being elastic and tapered to cushion the scraping action ofsaid blades.

3. In a device of the kind described, an elongated body having aplurality of transverse grooves which open out along a side portionthereof, scraper blades which individually occupy individual grooves ofsaid plurality of grooves, said grooves allowing a rocking movement ofsaid blades, said blades having apertures through them, and a tie rodextending through said apertures and secured to said elongated body,said tie rod being of smaller cross sectional dimensions than theopenings aiforded by said apertures, thereby affording clearancesbetween said blades and rod to allow the aforesaid swinging movement ofsaid bladesto take place.

4. In a device of the kind described, an elongated body of elasticmaterial having a plurality of transverse grooves formed in a sideportion thereof, scraper blades occupying said grooves, and means tofasten said blades within said grooves, the elasticity of said bodyallowing a greater flexion of said blades when the latter are used toperform a scraping operation.

5. In a device of the kind described, an elongated body having aplurality of straight parallel grooves in a side portion thereof, saidgrooves being triangular thereby widening their mouth portions,apertured scraper blades partially con tained within said grooves, and atie rod for said blades which passes loosely through their apertures andis secured to said body, the apertures of said blades being elongated inthe direction of the widths of the blades to permit said blades to rockin relation to said rod from abutting against one of the inclined sidesof the grooves to abutting their opposite sides.

6. The subject matter of claim 5 and, said body having webs along itssides which cover the ends of said grooves.

7. In a device of the kind described, an elongated body of elasticmaterial having a plurality of transverse grooves formed in a sideportion thereof, scraper blades occupying said grooves, and a resilientrod secured to said body'and extending through apertures through saidblades to fasten them within said grooves, the resiliency of said rodand elasticity of said body allowing a longitudinal flexion of thedevice whereby the scraping edges of said blades may be conformed tounevenness in the contour of a surface being scraped.

8. In a device of the kind described, a supporting body, and a series ofsubstantially parallel scraper blades rockably attached to a sideportion thereof in a projecting relation thereto, there being meanscarried by said body to maintain substantially stationary the innerportions of said blades, and stop means to limit their rockingmovements, said blades having scraping edges at their inner and theirouter sides and being reversible to utilize both the inner and the outerof said edges for scraping operations.

9. In a device of the kind described, an elongated body having aplurality of transverse grooves which open out along a side portionthereof, scraper blades which individually occupy individual grooves ofsaid plurality of grooves, said grooves allowing a rocking movement ofsaid blades, and means to fasten said blades swingably within saidgrooves, said grooves having narrowed inner portions of substantiallythe same width as each edge portion of said blades.

10. In a device of the kind described, an elongated body having aplurality of transverse grooves which open out along a side portionthereof, said grooves being tapered to a triangular cross-section, thuswidening their mouth portions, a scraper blade in each of said groovesand means whereby said blades are loosely attached to said body witheither of their scraping edges abuttable against the inner portions ofsaid grooves thereby allowing each blade to rock back and forth to andfrom contact with opposite sides of the mouth of the groove which itoccupies, said attaching means consisting of a rod which extendstransversely through a plurality of said blades.

11. In a device of the kind described, an elongated body having aplurality of transverse grooves which open out along a side portionthereof, said grooves being tapered, thus widening their mouth portions,a scraper blade in each of said grooves, and means whereby said bladesare loosely attached to said body thereby allowing each blade to rockback and forth to and from contact with opposite sides of the mouth ofthe groove which it occupies, there being an angular scraping edge alongeach side of the outer part of each of said blades, the rocking movementof the blade causing the scraping action thereof to be alternatelytransferred from one to the otherof said scraping edges.

DAVID J. WALLACE.

